Socket



FIG. 1 is a perspective view of a socket showing our new design thereof;

FIG. 2 is a elevational view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken lines shown in the drawings show unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a socket, as shown and described. 